This paper describes an approach combining thermal stress and magnetic force in order to generate α-Fe2O3 nanosheets on the surface of various iron substrates that include plate and powder and their application of nanosheets on water treatment. A typical procedure involved the thermal oxidation of these substrates on the hot plate with magnetic field in air and with fixed temperature of 500°C for different times. A possible mechanism — magnetic force adding on iron ions — was proposed to explain the growth of nanosheet at the width direction. Electron microscopic studies indicate that these nanosheets show a parabolic relation with time of thermal oxidation for the growth at width direction. A comparison of heavy metal (As, Cr) ion adsorption effect of nanosheets and nanowires was also investiged, which show that nanosheets have a much better adsorption ratio than nanowires.
- Manufacturing Engineering Division
Magnetic Field Assisted Growth of High Dense Hematite Nanosheets and Their Application in Water Treatment
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Lin, D, Deng, B, & Cheng, GJ. "Magnetic Field Assisted Growth of High Dense Hematite Nanosheets and Their Application in Water Treatment." Proceedings of the ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. Volume 1: Materials; Micro and Nano Technologies; Properties, Applications and Systems; Sustainable Manufacturing. Detroit, Michigan, USA. June 9–13, 2014. V001T03A005. ASME. https://doi.org/10.1115/MSEC2014-3958
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